题目内容

Activity 2My First Year Life in CollegeThe main idea: My first year in college is not free, but full of 1). My college life experience: Before entering college The adults around always tell me that college life is free and 2) .When studying in college A) My life is mainly made up of two parts - study and 3) . B) I’ m sure that spending time on study is 4) . What I’ve gained in college The chance will just come only if you have a 5) mind.

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Activity 3As we know, college education will 1)students’ opportunities for better jobs in the future. So I’m sure that spending time on study is 2). 3), study and some 4)should start from the very beginning of freshman year. The Student Union is a good place where one can develop social skills, get his abilities 5), have his competence 6)and make a lot of friends.

溢流阀利用__压力来控制阀口启闭。

19．减压阀利用__压力来控制阀口启闭。

就溢流阀的压力流量特性而言，其开启比和闭合比越__则说明其性能越好。